Stenus
Encyclopedia
Stenus is a genus of semiaquatic rove beetle
s in the subfamily Steninae. They are known for swimming by emitting pygidial gland secretions that reduce surface tension and allow them to move on the surface of water.
Rove beetle
The rove beetles are a large family of beetles, primarily distinguished by their short elytra that leave more than half of their abdomens exposed. With over 46,000 species in thousands of genera, the group is the second largest family of beetles after the Curculionidae...
s in the subfamily Steninae. They are known for swimming by emitting pygidial gland secretions that reduce surface tension and allow them to move on the surface of water.